diff --git a/.github/workflows/build-simulator.yaml b/.github/workflows/build-simulator.yaml
index fee3ba184c..1976ab4e46 100644
--- a/.github/workflows/build-simulator.yaml
+++ b/.github/workflows/build-simulator.yaml
@@ -19,7 +19,7 @@ jobs:
 
     - name: Compile Simulator
       working-directory: ./simulator/
-      run: sh compile.sh
+      run: bash compile.sh
 
     - name: Upload built simulator
       uses: actions/upload-artifact@v2
diff --git a/simulator/compile.sh b/simulator/compile.sh
index ab4db04d75..7858d49289 100644
--- a/simulator/compile.sh
+++ b/simulator/compile.sh
@@ -1,4 +1,5 @@
 rm -f build/rusefi_simulator.exe
 make -j4 -r
+[ $? -eq 0 ] || { echo "Simulator compilation failed"; exit 1; }
 file build/rusefi_simulator
 echo "TIMESTAMP $(date "+%D %T.%2N") just compiled rusefi simulator"